rathole gravel slurry井底: shaft bottom; landing; pit b ...口袋: bag; sack内: inner; inside; within的: 4次方是 The fourth power of 2 i ...砾石: gravel; grail; dirt下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:井底口袋内的砾石砂浆，即可在微信中查询翻译
